Converters for char[] and byte[]

A char array would be better stored as a single string and a byte array as a uuencoded (or something similar string).

class Thing {
char[] letters = new char[]

;
byte[] data = new byte[]

}

<thing>
<letters>hello</letters>
<data format="uuencode">ASDFDSGFEDFG%6464EFe5t</data>
</thing>